| 
                 
                    Closing price on 5/24/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    12.00 | 
                 
                
                    | High | 
                    12.00 | 
                 
                
                    | Low | 
                    11.20 | 
                     
                
                    | Volume | 
                    154,700 | 
                                 
                
                    | Split-adjusted Price | 
                    2.42 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PPS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                5/24/2012
             | 
            
                -0.30 / -2.50%
             |             
            
                12.00
             |           
            
                12.00
             |               
            
                11.20
             |                           
            
                11.70
             | 
            
                11.70
             |                     
            
                2.42
             |                                 
            
                154,700
             |            
            
                 
             |                                       
         
    
        
            | 
                5/23/2012
             | 
            
                -0.80 / -6.25%
             |             
            
                12.40
             |           
            
                12.60
             |               
            
                12.00
             |                           
            
                12.00
             | 
            
                12.00
             |                     
            
                2.48
             |                                 
            
                137,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/22/2012
             | 
            
                -0.10 / -0.78%
             |             
            
                13.60
             |           
            
                13.80
             |               
            
                12.50
             |                           
            
                12.80
             | 
            
                12.80
             |                     
            
                2.65
             |                                 
            
                176,100
             |            
            
                 
             |                                       
         
    
        
            | 
                5/21/2012
             | 
            
                +0.90 / +7.50%
             |             
            
                12.40
             |           
            
                12.90
             |               
            
                12.10
             |                           
            
                12.90
             | 
            
                12.90
             |                     
            
                2.67
             |                                 
            
                155,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/18/2012
             | 
            
                -0.70 / -5.51%
             |             
            
                12.50
             |           
            
                12.50
             |               
            
                11.90
             |                           
            
                12.00
             | 
            
                12.00
             |                     
            
                2.48
             |                                 
            
                260,300
             |            
            
                 
             |                                       
         
    
        
            | 
                5/17/2012
             | 
            
                -0.80 / -5.93%
             |             
            
                13.60
             |           
            
                13.70
             |               
            
                12.60
             |                           
            
                12.70
             | 
            
                12.70
             |                     
            
                2.63
             |                                 
            
                115,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/16/2012
             | 
            
                0.00 / 0.00%
             |             
            
                13.50
             |           
            
                13.50
             |               
            
                12.50
             |                           
            
                13.50
             | 
            
                13.50
             |                     
            
                2.80
             |                                 
            
                140,800
             |            
            
                 
             |                                       
         
    
        
            | 
                5/15/2012
             | 
            
                -1.00 / -6.90%
             |             
            
                14.20
             |           
            
                14.50
             |               
            
                13.30
             |                           
            
                13.50
             | 
            
                13.50
             |                     
            
                2.80
             |                                 
            
                257,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/14/2012
             | 
            
                -0.70 / -4.61%
             |             
            
                15.00
             |           
            
                15.50
             |               
            
                14.20
             |                           
            
                14.50
             | 
            
                14.50
             |                     
            
                3.00
             |                                 
            
                355,600
             |            
            
                 
             |                                       
         
    
        
            | 
                5/11/2012
             | 
            
                -0.80 / -5.00%
             |             
            
                16.00
             |           
            
                16.20
             |               
            
                15.10
             |                           
            
                15.20
             | 
            
                15.20
             |                     
            
                3.15
             |                                 
            
                272,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/10/2012
             | 
            
                +0.20 / +1.27%
             |             
            
                16.00
             |           
            
                16.30
             |               
            
                15.90
             |                           
            
                16.00
             | 
            
                16.00
             |                     
            
                3.31
             |                                 
            
                421,600
             |            
            
                 
             |                                       
         
    
        
            | 
                5/9/2012
             | 
            
                -0.60 / -3.66%
             |             
            
                15.90
             |           
            
                16.20
             |               
            
                15.50
             |                           
            
                15.80
             | 
            
                15.80
             |                     
            
                3.27
             |                                 
            
                514,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/8/2012
             | 
            
                -0.80 / -4.65%
             |             
            
                17.30
             |           
            
                17.70
             |               
            
                16.00
             |                           
            
                16.40
             | 
            
                16.40
             |                     
            
                3.40
             |                                 
            
                340,200
             |            
            
                 
             |                                       
         
    
        
            | 
                5/7/2012
             | 
            
                +0.80 / +4.88%
             |             
            
                16.20
             |           
            
                17.20
             |               
            
                16.20
             |                           
            
                17.20
             | 
            
                17.20
             |                     
            
                3.56
             |                                 
            
                657,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/4/2012
             | 
            
                +0.90 / +5.81%
             |             
            
                15.40
             |           
            
                16.50
             |               
            
                15.40
             |                           
            
                16.40
             | 
            
                16.40
             |                     
            
                3.40
             |                                 
            
                587,200
             |            
            
                 
             |                                       
         
    
        
            | 
                5/3/2012
             | 
            
                -0.50 / -3.13%
             |             
            
                15.50
             |           
            
                15.80
             |               
            
                15.10
             |                           
            
                15.50
             | 
            
                15.50
             |                     
            
                3.21
             |                                 
            
                492,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/2/2012
             | 
            
                -0.10 / -0.62%
             |             
            
                16.10
             |           
            
                16.60
             |               
            
                15.40
             |                           
            
                16.00
             | 
            
                16.00
             |                     
            
                3.31
             |                                 
            
                572,600
             |            
            
                 
             |                                       
         
    
        
            | 
                4/27/2012
             | 
            
                -0.40 / -2.42%
             |             
            
                16.30
             |           
            
                16.60
             |               
            
                15.90
             |                           
            
                16.10
             | 
            
                16.10
             |                     
            
                3.33
             |                                 
            
                707,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/26/2012
             | 
            
                -1.00 / -5.71%
             |             
            
                17.50
             |           
            
                17.50
             |               
            
                16.50
             |                           
            
                16.50
             | 
            
                16.50
             |                     
            
                3.42
             |                                 
            
                495,200
             |            
            
                 
             |                                       
         
    
        
            | 
                4/25/2012
             | 
            
                0.00 / 0.00%
             |             
            
                17.20
             |           
            
                17.90
             |               
            
                17.20
             |                           
            
                17.50
             | 
            
                17.50
             |                     
            
                3.62
             |                                 
            
                581,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/24/2012
             | 
            
                +0.40 / +2.34%
             |             
            
                16.90
             |           
            
                17.60
             |               
            
                16.40
             |                           
            
                17.50
             | 
            
                17.50
             |                     
            
                3.62
             |                                 
            
                421,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/23/2012
             | 
            
                +0.10 / +0.59%
             |             
            
                17.10
             |           
            
                17.60
             |               
            
                16.80
             |                           
            
                17.10
             | 
            
                17.10
             |                     
            
                3.54
             |                                 
            
                430,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/20/2012
             | 
            
                -0.90 / -5.03%
             |             
            
                17.80
             |           
            
                18.00
             |               
            
                16.90
             |                           
            
                17.00
             | 
            
                17.00
             |                     
            
                3.52
             |                                 
            
                595,200
             |            
            
                 
             |                                       
         
    
        
            | 
                4/19/2012
             | 
            
                -1.10 / -5.79%
             |             
            
                19.10
             |           
            
                19.20
             |               
            
                17.70
             |                           
            
                17.90
             | 
            
                17.90
             |                     
            
                3.71
             |                                 
            
                501,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/18/2012
             | 
            
                -0.30 / -1.55%
             |             
            
                19.30
             |           
            
                19.40
             |               
            
                18.90
             |                           
            
                19.00
             | 
            
                19.00
             |                     
            
                3.93
             |                                 
            
                409,600
             |            
            
                 
             |                                       
         
    
        
            | 
                4/17/2012
             | 
            
                +0.40 / +2.12%
             |             
            
                18.90
             |           
            
                19.80
             |               
            
                18.90
             |                           
            
                19.30
             | 
            
                19.30
             |                     
            
                4.00
             |                                 
            
                429,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/16/2012
             | 
            
                +1.20 / +6.78%
             |             
            
                17.70
             |           
            
                18.90
             |               
            
                17.70
             |                           
            
                18.90
             | 
            
                18.90
             |                     
            
                3.91
             |                                 
            
                311,500
             |            
            
                 
             |                                       
         
    
        
            | 
                4/13/2012
             | 
            
                +0.40 / +2.31%
             |             
            
                17.20
             |           
            
                18.40
             |               
            
                16.90
             |                           
            
                17.70
             | 
            
                17.70
             |                     
            
                3.66
             |                                 
            
                526,670
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/12/2012
             | 
            
                +0.30 / +1.76%
             |             
            
                17.20
             |           
            
                17.70
             |               
            
                16.90
             |                           
            
                17.30
             | 
            
                17.30
             |                     
            
                3.58
             |                                 
            
                595,690
             |            
            
                 
             |                                       
         
    
        
            | 
                4/11/2012
             | 
            
                +0.30 / +1.80%
             |             
            
                16.80
             |           
            
                17.10
             |               
            
                16.70
             |                           
            
                17.00
             | 
            
                17.00
             |                     
            
                3.52
             |                                 
            
                422,100
             |  
            
                 
             |                                                              
             
    
         
    
    
 |